Ontogenetic integration of the hominoid face
Ontogenetic integration of the hominoid face
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DOI：
10.1016/j.jhevol.2004.11.001
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发表时间：
2005-02-01
影响因子：
3.2
通讯作者：
Ackermann, RR
中科院分区：
文献类型：
--
作者：
Ackermann, RR
通过研究颅骨协变模式的相似性，有可能找到模式形成的潜在功能和发育原因，并对产生模式的进化力量做出推断。此外，确定这些协变模式在个体发育中的差异可能有助于洞察选择何时可能对发育起作用。在这里，为了解决三个问题，我们比较了非洲猿类/人类支系的成年和非成年成员之间的协变模式。首先，成年非洲类人猿和人类之间的融合模式是恒定的吗？第二，它们在非成人中是恒定的吗--即在整个个体发育中？第三，如果它们不是恒定的，它们什么时候会分化？测量数据来自677个成年和未成年非洲类人猿和人类的头盖骨。为了解决前两个问题，利用矩阵相关方法对相关矩阵和理论积分矩阵进行了比较。第三个问题是通过比较相关性和方差/协方差模式，分别使用矩阵相关和随机倾斜方法，在每个物种内的相邻年龄类别之间以及在四个物种之间的同等年龄类别之间进行比较来评估第三个问题。结果表明，类人猿具有相似的个体发育整合模式，这表明共同的发育/功能整合过程可能在保持该谱系之间协方差结构稳定方面发挥重要作用。然而，物种之间在整合的大小和表型协方差结构上存在一些重要的差异，这可能为揭示选择如何将人类与类人猿区分开来提供了一些见解。(C)2005爱思唯尔有限公司。保留所有权利。
By investigating similarity in cranial covariation patterns, it is possible to locate underlying functional and developmental causes for the patterning, and to make inferences about the evolutionary forces that have acted to produce the patterns. Furthermore, establishing where these covariation patterns may diverge in ontogeny can offer insight into when selection may have acted on development. Here, covariation patterns are compared among adult and non-adult members of the African ape/human clade, in order to address three questions. First, are integration patterns constant among adult African apes and humans? Second, are they are constant in non-adults - i.e. throughout ontogeny? Third, if they are not constant, when do they diverge? Measurements are obtained from 677 crania of adult and non-adult African apes and humans. In order to address the first two questions, correlation matrices and theoretical integration matrices are compared using matrix correlation methods. The third question is evaluated by comparing correlation and variance/ covariance patterns, using matrix correlation and random skewers methods, respectively, between adjacent age categories within each species, and between equivalent age categories among the four species. Results show that the hominoids share a similar pattern of ontogenetic integration, suggesting that common developmental/functional integrative processes may play an important role in keeping covariance structure stable across this lineage. However, there are some important differences in the magnitude of integration and in phenotypic covariance structure among the species, which may provide some insight into how selection acted to differentiate humans from the great apes. (c) 2005 Elsevier Ltd. All rights reserved.